Looking for a reliable pressure switch that can handle even the most demanding applications? Look no further than the Model 40. This piston-style pressure switch is available with either normally open or normally closed contacts, making it ideal for a wide range of applications. And with an adjustable range of 50 to 300 bar, it can be tailored to your specific needs. Plus, the max working pressure of 450 bar and overpressure limit of 800 bar ensure that this switch can handle even the most strenuous tasks.